Overview: This series of quick connector for the current popularity of the domestic advanced equipment, the actual use of the process due to the original pipe joints in the drag loose and easy with an O-ring seal in the form of easy to wear, short life problems and developed a new generation of national patent products. Seal forms and advantages of using anti-loose device having a higher density, smart and convenient, safe and reliable, long life, is currently used for compressed air line quick connector to connect the most ideal.